Saturn and Jupiter

[multiweb (Marc)]

Sorry about the lack of details. I have to learn all that planetary parlance and presentation. Don't even know which side is up yet.

Taken with the CN-212 at prime with an ASI120MM and an IR filter. I shot in SER files (8bit). For Saturn I joined two separate SER files with PIPP.

Processed with AS and default deconv. Jupiter though I did the sharpening in RegiStax because AS left a nasty ring during sharpening around the planet.

I don't do enough planetary to process the full benefit out of the data and very keen on any critique so I can learn.

PS: what's the maximum time you can take a loop in seconds before starting to see smearing due to the planet's rotation on Jupiter and Saturn? TIA.

[Tulloch (Andrew)]

Hi Marc, these look pretty good, best resolution for planetary is obtained when the focal ratio is about 5x the pixel size of the camera (around f/20 for the ASI120MM). The sharpening feature in AS!3 is only there as a quick guide to see if it's worth sharpening the image properly in Registax. If you are new to planetary, these tutorial videos are well worth a look.
http://planetaryimagingtutorials.com/

3 minutes for Jupiter, 5 minutes for Saturn and Mars will avoid any rotational blurring and should give you enough frames for stacking.

Andrew

[multiweb (Marc)]

Thanks a lot for the tips Andrew. I will review the tuts.
I did Jupiter again tonight and focused on one of its moons. Also set the fov of the ASI to a smaller frame and I got ~55fps. A lot better than yesterday.

I'll have to barlow the scope then by the sound of it. That's going to get hairy to land the planets on the CCD.

[multiweb (Marc)]

Hi Andrew, here's one from last night. I got the focus better and captured a cropped fov. This is blowned x2 from original. Does it look alright to you, or over/under processed? Real details or sharpening artefacts? Trying to gauge how far the processing can go. Let me know. Thanks.

[Dennis]

Very nice Marc, some lovely detail there.

Cheers

Dennis

[Tulloch (Andrew)]

They look really good Marc, you've captured the NTZ outbreak on Jupiter (the bright patch on the top-left area of the planet), a really clear Cassini Division right to the front of the rings and even a hint of the C-ring! Excellent work!

The big question is where are you going next? A colour filter wheel for your ASI120MM, or a new ASI462MC colour camera? What about the C11, aperture rules for planetary So many choices

Andrew

[multiweb (Marc)]

Originally Posted by Dennis

Very nice Marc, some lovely detail there.

Cheers

Dennis

Thanks mate, and thanks for the topaz tut.

Originally Posted by Tulloch

They look really good Marc, you've captured the NTZ outbreak on Jupiter (the bright patch on the top-left area of the planet), a really clear Cassini Division right to the front of the rings and even a hint of the C-ring! Excellent work!

The big question is where are you going next? A colour filter wheel for your ASI120MM, or a new ASI462MC colour camera? What about the C11, aperture rules for planetary So many choices

Andrew

Thanks Andrew. It's encouraging to know that I'm no fabricating details in the process. I have an idea now where to stop the sharpening.

As I said I need to look closer at what you guys do with annotations about orientation, revolution details and what's facing what, etc... Looking into that barlow too
I have a bunch of manual color wheels and color filters. Just never got around it. I suspect another thing to do will be to learn derotating before doing color as the channel will be taken at different times. Mono IR is easier to learn at this stage for me.

True. I suspect the C11 would yield far better results on axis. It's so bloody heavy though... I really enjoy it for visual that's why I never sold it. But imaging with it is getting harder as time goes by.

[multiweb (Marc)]

Made a little GIF animation with the 7 frames.

[multiweb (Marc)]

And here's a better sharpened Saturn with more frames I think.

[h0ughy (David)]

Great stuff